In your apps · 3 min

Summarize a long PowerPoint deck

PowerPoint, Copilot

Short answer: Open the presentation, select Copilot, type Summarize this presentation and send. Then ask Show key slides or Show action items. Copilot shows references to where it pulled each point from.

Last checked against Microsoft docs: Oct 21, 2026

You've seen people drop a PDF deck into ChatGPT for a summary. Here's how in Copilot: open the deck in PowerPoint and ask Copilot. It shows where each point came from.

A common situation (composite)

The meeting is in 20 minutes.
The pre-read is 60 slides.
I need the three things that matter.

What you get

Data: one PowerPoint file.
Does: summarizes and finds key slides and actions.
Output: bullets with references to slides.
How often: before any meeting with a pre-read.

Before you start

Needs: Microsoft 365 Copilot. Not sure what you have? Start here.
Where: PowerPoint, Copilot.
Access: Copilot only uses content you already have permission to open. Use only information your company allows in Copilot.

The steps

Open the deck in PowerPoint.
Select Copilot on the ribbon.
Paste the prompt below, or type Summarize this presentation.
Check the references for anything you'll repeat.

Copy this prompt

Summarize this presentation in 5 bullets for someone who has 2 minutes.
Then: which 3 slides should I read in full, and why?
Then: list any action items or asks of the audience, with slide numbers.

(Prompt from stuckwithcopilot.com/guides/summarize-a-deck/)

Data tip: use this with your work Copilot, and leave out passwords, payment details and anything your company marks restricted.

What a good result looks like

Each bullet points back to the deck. Read the 3 slides it picks.

If a feature is missing

Copilot in PowerPoint summarizes decks up to about 40,000 words. For longer files, split them.

Make it smarter

Keep a short "What it got wrong" note. Paste it above the prompt next time, like "Don't invent dates".

Not sure what to ask? Copy the quick note for your Copilot admin.

Long documents too

The same trick works in Word or Copilot Chat with a file attached. Contracts, reports and RFPs are where it saves the most time.

In Word: open the document and ask Copilot for a summary from the Copilot pane.
In Copilot Chat: attach or reference the file and use the prompt below.
RFPs: for a full breakdown, see the RFP first-pass guide.

Prompt

Summarize [file] in five bullets for a [your role]. Then list anything that affects price, dates, or what we're committing to, with the page or section number for each.

(Prompt from stuckwithcopilot.com/guides/summarize-a-deck/)

Make it better

Run this next, in the same chat.

Now list the three things in this document I'd most regret missing, and anything that seems to contradict something else in it. Point to the section each time.

(Prompt from stuckwithcopilot.com/guides/summarize-a-deck/)

Data tip: use this with your work Copilot, and leave out passwords, payment details and anything your company marks restricted.

Questions people ask

Summarize a long PowerPoint deck?

Open the presentation, select Copilot, type Summarize this presentation and send. Then ask Show key slides or Show action items. Copilot shows references to where it pulled each point from.

What do I need for this?

Microsoft 365 Copilot. Copilot in PowerPoint summarizes decks up to about 40,000 words. For longer files, split them.

Does this work for PDFs and Word files?

Yes in Copilot Chat with the file referenced, and in Word for Word documents. Check page numbers against the document before you rely on them.

Next step

Try it once, then make it yours.

Run the prompt on one real task this week. Then pick your next workflow.

See the workflow library ↗

Cite or share this guide

Summarize a long PowerPoint deck. Stuck with Copilot. https://stuckwithcopilot.com/guides/summarize-a-deck/ Last checked Oct 21, 2026.

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Official references

Last checked against Microsoft docs: Oct 21, 2026.